Video 
game consoles, typically, spend about five or six years in the spotlight, before stepping aside for the next generation. The current cycle, though, is now entering its seventh year — a longevity that many analysts and publishers blame for the malaise that has affected the shares of game makers.
Sony, on Feb. 20, is expected to unveil the PlayStation 4, its entry in the next generation battle. The system is more than the start of a new cycle, though; it’s an essential step in rebuilding Sony as a corporation.
Chris Morris: Journalist 